Exemplification of a Final Concord in the Great Sessions of Caernarvon between Owen Griffith, esq., and Roger Mostyn, esq., plaintiffs, and William Griffith, esq., deforciant, regarding 300 Messuages and lands in Penllech, Meyllteyrn, Tvdweiliog, Morfa, Nantgwnadl, Uwchheli, Isheli, Ultradaron, Penarfynydd, Bodrydd, Aberdaron, Llanfaelrhys et alibi in Lleyn 12 September 1678